#pragma once

#include <iostream>
#include <time.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

#define Info 0
#define Debug 1
#define Warning 2
#define Error 3
#define Fatal 4

#define SIZE 1024

#define SCREEN 5
#define ONE_FILE 6
#define CLASS_FILE 7

#define LogFile "log.txt"

class Log
{
public:
    void Enable(int method)
    {
        _method = method;
    }

    std::string LevelToString(int level)
    {
        switch (level)
        {
        case Info:
            return "Info";
        case Debug:
            return "Debug";
        case Warning:
            return "Warning";
        case Error:
            return "Error";
        case Fatal:
            return "Fatal";
        }
    }

    void PrintOneFile(const std::string &logname, const std::string &logtxt)
    {
        std::string filename = _path + logname;
        int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_APPEND, 0666);
        if (fd < 0)
            return;

        write(fd, logtxt.c_str(), logtxt.size());
        close(fd);
    }

    void PrintClassFile(int level, const std::string &logtxt)
    {
        std::string filename = LogFile;
        filename += ".";
        filename += LevelToString(level);
        PrintOneFile(filename, logtxt);
    }

    void PrintLog(int level, const std::string &logtxt)
    {
        // std :: cout << _method << std::endl;
        switch (_method)
        {
        case SCREEN:
            // std::cout << "111" << std::endl;
            std::cout << logtxt;
            break;
        case ONE_FILE:
            //  std::cout << "2222" << std::endl;
            PrintOneFile(LogFile, logtxt);
            break;
        case CLASS_FILE:
            PrintClassFile(level, logtxt);
            break;
        }
    }

    // void logmessage(int level, const char *format, ...)
    // {
    //     time_t t = time(nullptr);
    //     struct tm *_time = localtime(&t);
    //     char leftbuffer[SIZE];
    //     snprintf(leftbuffer, sizeof(leftbuffer), "[%s][%d-%d-%d %d:%02d:%02d]", LevelToString(level).c_str(),
    //              _time->tm_year + 1900, _time->tm_mon + 1, _time->tm_mday,
    //              _time->tm_hour, _time->tm_min, _time->tm_sec);

    //     va_list s;
    //     va_start(s, format);
    //     char rigthbuffer[SIZE];
    //     vsnprintf(rigthbuffer, sizeof(rigthbuffer), format, s);
    //     va_end(s);

    //     char logtxt[SIZE * 2];
    //     snprintf(logtxt, sizeof(logtxt), "%s %s\n", leftbuffer, rigthbuffer);

    //     // std::cout << logtxt << std::endl;
    //     // printf("[%d-%d-%d %d:%02d:%02d]\n", _time->tm_year + 1900, _time->tm_mon + 1,
    //     //          _time->tm_mday, _time->tm_hour, _time->tm_min, _time->tm_sec);

    //     PrintLog(level, logtxt);
    // }

    void operator()(int level, const char *format, ...)
    {
        time_t t = time(nullptr);
        struct tm *_time = localtime(&t);
        char leftbuffer[SIZE];
        snprintf(leftbuffer, sizeof(leftbuffer), "[%s][%d-%d-%d %d:%02d:%02d]", LevelToString(level).c_str(),
                 _time->tm_year + 1900, _time->tm_mon + 1, _time->tm_mday,
                 _time->tm_hour, _time->tm_min, _time->tm_sec);

        va_list s;
        va_start(s, format);
        char rigthbuffer[SIZE];
        vsnprintf(rigthbuffer, sizeof(rigthbuffer), format, s);
        va_end(s);

        char logtxt[SIZE * 2];
        snprintf(logtxt, sizeof(logtxt), "%s %s\n", leftbuffer, rigthbuffer);

        // std::cout << logtxt << std::endl;
        // printf("[%d-%d-%d %d:%02d:%02d]\n", _time->tm_year + 1900, _time->tm_mon + 1,
        //          _time->tm_mday, _time->tm_hour, _time->tm_min, _time->tm_sec);

        PrintLog(level, logtxt);
    }

private:
    // 默认打显示屏
    int _method = SCREEN;
    std::string _path = "./log/"; // 要自己先创建目录
};


Log lg;